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Square rig

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SquareRigs

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DIY square rigged sailboat

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Square rigged sailing with Tres Hombres

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Square rig

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Why Square Sails Cannot Sail Upwind

Square rig is a generic type of sail and rigging arrangement in which the primary driving sails are carried on horizontal spars which are perpendicular, or square, to the keel of the vessel and to the masts. These spars are called yards and their tips, beyond the last stay, are called the yardarms. A ship mainly so rigged is called a square-rigger.